Segment Information Balance Sheet Data (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($) segment	Dec. 31, 2016 USD ($)
Segment Reporting Information [Line Items]
Number of Reportable Operating Segments | segment	4
Total Assets	$ 5,046,782	$ 4,865,022
Entertainment Reportable Operating Segment [Member]
Segment Reporting Information [Line Items]
Total Assets	2,177,829	2,168,669
Education Reportable Operating Segment [Member]
Segment Reporting Information [Line Items]
Total Assets	1,400,979	1,308,288
Recreation Reportable Operating Segment [Member]
Segment Reporting Information [Line Items]
Total Assets	1,209,703	1,120,498
Other Reportable Operating Segment [Member]
Segment Reporting Information [Line Items]
Total Assets	197,914	202,394
Corporate / Unallocated
Segment Reporting Information [Line Items]
Total Assets	$ 60,357	$ 65,173